adj. pertaining to astigmatism (unequal curvature of the lens of the eye creating a distorted image)

The following video provides you with the correct English pronunciation of the word "astigmatic", to help you become a better English speaker.

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Adjective
1. of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images
(antonym) anastigmatic, stigmatic

(a.)
Affected with, or pertaining to, astigmatism; as, astigmatic eyes; also, remedying astigmatism; as, astigmatic lenses.
  

adjective
referring to astigmatism
he is astigmatic = he suffers from astigmatism
COMMENT: in astigmatism, horizontal and vertical objects are not both in correct focus

med. astigmatic